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drm/tinydrm: mipi-dbi: Fix field width specifier warning 

This warning is seen on 64-bit builds in functions:
   'mipi_dbi_typec1_command':
   'mipi_dbi_typec3_command_read':
   'mipi_dbi_typec3_command':

>> drivers/gpu/drm/tinydrm/mipi-dbi.c:65:20: warning: field width specifier '*' expects argument of type 'int', but argument 5 has type 'size_t {aka long unsigned int}' [-Wformat=]
      DRM_DEBUG_DRIVER("cmd=%02x, par=%*ph\n", cmd, len, data); \
                       ^
   include/drm/drmP.h:228:40: note: in definition of macro 'DRM_DEBUG_DRIVER'
     drm_printk(KERN_DEBUG, DRM_UT_DRIVER, fmt, ##__VA_ARGS__)
                                           ^~~
>> drivers/gpu/drm/tinydrm/mipi-dbi.c:671:2: note: in expansion of macro 'MIPI_DBI_DEBUG_COMMAND'
     MIPI_DBI_DEBUG_COMMAND(cmd, parameters, num);
     ^~~~~~~~~~~~~~~~~~~~~~

Fix by casting 'len' to int in the macro MIPI_DBI_DEBUG_COMMAND().
There is no chance of overflow.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Noralf Trønnes 2017-02-23 14:29:56 +01:00 committed by Dave Airlie
parent b401f34314
commit ce8c013700
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/tinydrm/mipi-dbi.c
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@ -62,9 +62,9 @@
if (!len) \ if (!len) \
DRM_DEBUG_DRIVER("cmd=%02x\n", cmd); \ DRM_DEBUG_DRIVER("cmd=%02x\n", cmd); \
else if (len <= 32) \ else if (len <= 32) \
DRM_DEBUG_DRIVER("cmd=%02x, par=%*ph\n", cmd, len, data); \ DRM_DEBUG_DRIVER("cmd=%02x, par=%*ph\n", cmd, (int)len, data);\
else \ else \
DRM_DEBUG_DRIVER("cmd=%02x, len=%zu\n", cmd, len); \ DRM_DEBUG_DRIVER("cmd=%02x, len=%zu\n", cmd, (int)len); \
}) })
static const u8 mipi_dbi_dcs_read_commands[] = { static const u8 mipi_dbi_dcs_read_commands[] = {